Free SMS tools
Check your SMS before you send it
See how many SMS a message really uses, what it costs on each plan, and how your OTP looks on a customer's phone. Everything runs in your browser; nothing is sent or stored.
SMS length & cost
How many SMS is this message?
One SMS holds 160 English (GSM-7) characters or 70 in Nepali or other Unicode text. Longer messages are split into parts of 153 or 67, and each part is one SMS.
- Encoding
- GSM-7
- Characters
- 82
- Per SMS
- 160
- SMS used
- 1
English (GSM-7): 160 characters in one SMS, 153 per part when longer. Characters like { } [ ] ~ ^ | \ € count as two.
Cost per message
- Starter (NPR 0.67 per SMS)NPR 0.67
- Business (NPR 0.50 per SMS)NPR 0.50
SMS needed3,000
Best planStarter
Monthly estimateNPR 3,000
1,500 SMS of the allowance would go unused; unused SMS expire monthly.
Costs use the published plan rates. Unused SMS expire monthly and top-ups are charged at your plan's rate. See pricing.
OTP preview
See your verification code on a phone
The OTP API sends one fixed, approved message with your brand name in front. Type your name to see exactly what your customers receive.
- Six digits, valid for 5 minutes
- Built-in template, already approved
- Only a hash of the code is stored; it shows as “(OTP hidden)” in logs
GSM-7 · 80 characters · 1 SMS
Preview: YourApp: 482913 is your verification code. Valid for 5 minutes. Do not share it.
Preview only: no SMS is sent. Codes are generated, sent and checked by the OTP API.
Send your first SMS this week
Plans from NPR 3,000 a month. Tell us what you send and we'll set up your account, so OTP works on day one.
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