# Tools for people who send messages.

- Canonical URL: https://www.broadnet.me/tools
- Language: en
- Last updated: 2026-10-21
- Publisher: BroadNet (https://www.broadnet.me)
- Markdown version of the page above, generated from the rendered page.

Free developer tools

Free tools to plan a launch, test an integration and troubleshoot delivery, with no sign-up. Most run in your browser on public standards such as GSM 03.38, SMPP v3.4 and E.164. Five use BroadNet's own coverage and list-rate data: the Country Launch Planner, the Verification Cost Explorer, the Coverage × Compliance Explorer, the SMS Cost Estimator and the Channel Cost Comparison.

41 tools

[Country Launch Planner Pick a market, channel, sender type and use case to get the regulator and documents, sender-ID lead time, direct operators, price band and fallback path, as a downloadable launch brief. Open tool](https://www.broadnet.me/tools/launch-planner) [SMS Fraud Workbench Run labelled sample traffic (OTP, smishing, pumping, spoofing, grey route) through a firewall and see the verdict, reason, latency and action from the enterprise and the operator side. Open tool](https://www.broadnet.me/tools/fraud-workbench) [Verification Cost Explorer Model channel mix, encoding, resends, fallback and fraud to see the spend and the cost per completed verification, not just per message. Open tool](https://www.broadnet.me/tools/verification-cost) [SMS Segment Calculator Detect GSM-7 vs UCS-2 encoding, count segments and characters left, and see exactly which characters force Unicode — with an optional cost estimate at your own rate. Open tool](https://www.broadnet.me/tools/sms-segment-calculator) [SMPP Error Codes Search every SMPP v3.4 command_status value by hex or symbolic name, with a plain-English meaning and the likely cause and fix. Open tool](https://www.broadnet.me/tools/smpp-error-codes) [MCC / MNC Lookup Find the Mobile Country Code and Mobile Network Code (ITU-T E.212) behind an operator — search a curated GCC, MENA and global subset by MCC, MNC, country or operator. Open tool](https://www.broadnet.me/tools/mcc-mnc-lookup) [SMPP DLR Decoder Paste an SMPP delivery receipt or pick a stat value to decode the final message state, the err field and every parsed field, per the SMPP v3.4 spec. Open tool](https://www.broadnet.me/tools/dlr-decoder) [Webhook Signature Validator Compute and verify an HMAC webhook signature (SHA-256 or SHA-1) with the Web Crypto API — paste payload, secret and signature and see match or mismatch. Nothing leaves your browser. Open tool](https://www.broadnet.me/tools/webhook-signature-validator) [Erlang C Calculator Size a contact centre: enter call volume, handle time and a target service level for required agents, occupancy and ASA — plus a CPS × ACD concurrent-calls helper. Open tool](https://www.broadnet.me/tools/erlang-calculator) [GSM-7 / Unicode Checker Paste any SMS text to classify every character as GSM-7 basic, GSM-7 extension or Unicode-only, with a per-character table pinpointing exactly which characters force UCS-2. Open tool](https://www.broadnet.me/tools/gsm7-unicode-checker) [TPS Calculator Throughput planner: enter message volume, TPS and segments per message to get total time to send, messages per hour and a completion ETA — standard math, shown in full. Open tool](https://www.broadnet.me/tools/tps-calculator) [OTP Cost Estimator Estimate monthly OTP spend and effective cost per successful OTP from your volume, delivery and retry rates and your own per-message SMS and voice rates. Your rates only. Open tool](https://www.broadnet.me/tools/otp-cost-estimator) [cURL Command Generator Build a ready-to-run cURL command from a method, URL, headers, JSON body and Bearer token, with one-click copy and a messaging-API send preset. Open tool](https://www.broadnet.me/tools/curl-generator) [Developer Utilities A small bundle of everyday converters: Unix timestamp ↔ ISO date, Base64 encode/decode, a UUID v4 generator and an E.164 phone validator — all client-side. Open tool](https://www.broadnet.me/tools/dev-utils) [SMPP PDU Decoder Paste the hex of an SMPP v3.4 PDU to decode its 16-byte header — command_length, command_id (with name), command_status and sequence_number — plus the submit_sm / deliver_sm body-field layout. Open tool](https://www.broadnet.me/tools/smpp-pdu-decoder) [SMPP Session Simulator Walk a full SMPP 3.4 session — bind, submit_sm, delivery receipt, unbind — with the real PDU bytes. Nothing connects, nothing sends. Open tool](https://www.broadnet.me/tools/smpp-simulator) [Sender ID Validator Check an alphanumeric or numeric SMS sender ID against the GSM standard: the 11-character limit, the GSM 7-bit charset and the format rules that decide whether a network accepts, strips or rejects it. Open tool](https://www.broadnet.me/tools/sender-id-validator) [Phone Number Formatter Normalize a number to E.164 (+CCNSN) from a curated country table, see national and international display forms, and run an E.164 length plausibility check. Cites ITU-T E.164. Open tool](https://www.broadnet.me/tools/phone-number-formatter) [Codec Bandwidth Calculator Pick a voice codec (G.711, G.729, G.722, Opus, AMR) and packetization interval to get bandwidth per call with and without IP/UDP/RTP overhead — the full math shown. Open tool](https://www.broadnet.me/tools/codec-bandwidth-calculator) [Delivery Rate Calculator Enter sent, delivered, failed and pending counts to get delivery rate, failure rate and a clear breakdown — from your own numbers only, with a DLR reconciliation check. Open tool](https://www.broadnet.me/tools/delivery-rate-calculator) [SMS True-Cost Calculator Compare two providers or routes on cost per delivered message — total spend divided by the messages that actually arrive. The headline rate can lie; this shows the real cost. Your figures only. Open tool](https://www.broadnet.me/tools/true-cost-calculator) [Webhook Payload Inspector Paste a messaging webhook — a delivery receipt or an inbound message — to validate the JSON, detect the event type, and see every field explained in plain English. Runs in your browser. Open tool](https://www.broadnet.me/tools/webhook-payload-inspector) [Message Template Previewer Write an SMS template with {{variables}}, fill in sample values, and preview the resolved message in a phone-style bubble with live character count, GSM-7 vs Unicode encoding and segment count — flagging unresolved variables. Runs in your browser. Open tool](https://www.broadnet.me/tools/message-template-previewer) [Coverage × Compliance Explorer Search, filter and sort every market BroadNet covers — operators, delivery rate, latency, price band and sender-ID registration rules — in one interactive table, with per-country coverage and regulation deep-links. Open tool](https://www.broadnet.me/tools/coverage-explorer) [API Request Builder Fill in the fields and get a correct BroadNet SMS API request — POST /sms/sendSms with a Bearer token and a JSON body — plus copy-paste cURL, Node, Python and TypeScript SDK snippets, with the legacy HTTP API too. It builds the request; it never sends. Open tool](https://www.broadnet.me/tools/api-request-builder) [SMS Cost Estimator Enter monthly volume, pick a destination country and type a sample message to get an indicative monthly SMS cost — real per-country reference rates times segments times volume. Get a quote for exact pricing. Open tool](https://www.broadnet.me/tools/sms-cost-estimator) [SMS Marketing ROI Calculator Enter your campaign assumptions — audience, conversion rate, order value and SMS cost — to project revenue, cost, ROI and ROAS. Your numbers only; not an industry benchmark. Open tool](https://www.broadnet.me/tools/sms-roi-calculator) [Number Insight Enter a phone number to see its country, region, dialing code and E.164 formatting, plus the operators serving that market. For the live operator and line-type, use HLR Lookup. Open tool](https://www.broadnet.me/tools/number-insight) [Bulk Number List Validator Paste a list of phone numbers to normalize them to E.164, validate, de-duplicate and flag invalid ones — then copy or download the clean list. Runs entirely in your browser. Open tool](https://www.broadnet.me/tools/number-list-validator) [Campaign Link Builder (UTM) Build a correctly-tagged UTM tracking URL for SMS, WhatsApp and RCS campaigns, with validation and an SMS-length check. Runs in your browser; nothing is sent anywhere. Open tool](https://www.broadnet.me/tools/utm-link-builder) [Send-Window Planner Pick destination countries to see each markets compliant marketing send window — quiet-hours-aware — converted to your own timezone, with an overlap across all selected markets. Guidance, not legal advice. Open tool](https://www.broadnet.me/tools/send-window-planner) [OTP Security Calculator Configure an OTP scheme — length, character set, expiry, attempt limit — to compute its combination space, entropy and brute-force resistance, with hardening recommendations. Exact math. Open tool](https://www.broadnet.me/tools/otp-security-calculator) [WhatsApp Template Validator Compose a WhatsApp Business template and validate it against public Meta structure rules — header, body, footer, buttons and variables — with a live preview. Final approval is Meta's. Open tool](https://www.broadnet.me/tools/whatsapp-template-validator) [A2P Compliance Checklist Select a destination country and message type to generate a country-specific A2P SMS compliance checklist — sender ID, consent, timing, data protection — from published regulator and operator rules. Guidance, not legal advice. Open tool](https://www.broadnet.me/tools/compliance-checklist) [Channel Cost Comparison Compare the cost of reaching your audience via SMS, WhatsApp, RCS and Voice side by side — you set the per-channel rates (SMS can use a real country reference rate), ranked by total campaign cost. Cost is only one factor. Open tool](https://www.broadnet.me/tools/channel-cost-comparison) [Two-Way SMS Keyword Designer Design inbound-keyword auto-reply rules (STOP, HELP, START and custom) for a two-way SMS number and simulate the conversation, with segment counts and compliance warnings. A design tool — it does not send real messages. Open tool](https://www.broadnet.me/tools/keyword-autoresponder-designer) [A/B Test Sample-Size Calculator Enter your baseline conversion rate, the lift you want to detect, confidence and power to get the audience size each variant needs — so your SMS/WhatsApp A/B tests are statistically valid. Exact math; your baseline. Open tool](https://www.broadnet.me/tools/ab-test-calculator) [WhatsApp 24-Hour Window Calculator Enter when a customer last messaged you to see when the WhatsApp 24-hour service window closes, with a live countdown and what you can send inside (free-form) vs outside (template) it. Reflects public Meta policy. Open tool](https://www.broadnet.me/tools/whatsapp-window-calculator) [Click-to-WhatsApp Link & QR Generator Turn a WhatsApp business number and a pre-filled message into a ready wa.me click-to-chat link and a scannable QR code for ads, packaging and storefronts. Runs entirely in your browser. Open tool](https://www.broadnet.me/tools/whatsapp-link-generator) [RCS Message & Rich-Card Builder Compose RCS rich cards and carousels — media, title, suggested replies and actions — validate them against public RCS component limits, preview in a phone frame, and export the JSON. Open tool](https://www.broadnet.me/tools/rcs-message-builder) [Message Encoding Sanitizer Paste an SMS to find the smart quotes, dashes, look-alike letters and emoji that silently force Unicode and double your cost — then get a GSM-7-safe cleaned version. Runs in your browser. Open tool](https://www.broadnet.me/tools/message-sanitizer)

More tools are on the way. We add utilities as we build them for our own team. Want one that isn't here? [Tell us](https://www.broadnet.me/contact).

## Build on carrier-grade infrastructure.

When you're ready to send for real, BroadNet ships a Bearer-token REST API, direct SMPP 3.4 binds, delivery webhooks and an official TypeScript SDK across 200+ countries.

[Developer hub](https://www.broadnet.me/developers) [Contact sales](https://www.broadnet.me/contact)