Free calling tools
Format a phone number, find the right dialing format, estimate a call cost, or choose a time to call. No sign-up required.
International dialing assistant
Choose where the call starts and ends to see the international dialing format.
Phone number formatter
Convert a phone number into international, national, and E.164 formats.
Call cost calculator
Enter a destination number to estimate its current Fonable call price.
Best time to call
Choose two countries to find a call time that works for both people.
Microphone test
Test your microphone in the browser before Google Meet, Zoom, Microsoft Teams, Skype, or other calling apps. Audio stays on your device.
Fonable is a pay-as-you-go international calling service that runs in your browser.
Last updated: Sep 19, 2026