Free phone tools
International dialing codes, calling rates, phone number format, timezones, toll-free checks, and more. Free in your browser, and you do not need an account.
Free to use · No account for tools · 1 free minute to try a call
All tools
Pick a tool below. Each one does one job: look something up, check a number, or fix a call problem.
International Dialing Code Finder
Find a country calling code, see the time difference, and format a local number for international dialing.
Country calling codes • Local time • Number format
Find a dialing codeInternational Calling Rates Calculator
See the per-minute rate for a country and estimate what a call will cost before you dial.
Per-minute rate • Call cost • Minutes for $5 / $10 / $20
Estimate call costBrowser Call Quality Test
Check your microphone, speakers, and browser when people can’t hear you on a web call. Nothing is uploaded.
Live mic meter • Speaker beep • Browser check
Test mic & speakersPhone Number Timezone Checker
See local time for a phone number’s country, the difference from you, and whether it’s a good hour to call.
Live local time • Time difference • Call window
Check timezoneUS Toll-Free Number Checker
Check US 1-800 / 888 / 877… numbers, confirm the toll-free prefix, and see the rate for calling from abroad.
800-833 prefixes • E.164 format • US rate
Check a toll-free numberPhone Number Validator & Formatter
Paste a phone number to check the format and get international, E.164, and national versions.
Valid / invalid • E.164 • National format • Number type
Validate a phone numberBulk Phone Number Cleaner
Paste or upload messy phone lists. Convert to E.164, flag bad rows, remove duplicates, and download a clean CSV.
E.164 • Deduplicate • CSV export • Browser-only
Clean a phone listPhone Number Generator
Create random mobile numbers that pass format checks, for demos and form testing, not real contacts.
By country • E.164 • Test data only
Generate a phone numberAbout these free phone tools
Use them when you need a country calling code, an E.164 number format, a rough calling rate, or a check before you dial. That includes local time, US toll-free prefixes, and mic or speaker problems on a browser call.
They are for everyday use: travelers, remote teams, support agents, and anyone cleaning a contact list. They stay useful on their own, whether or not you place a call afterward.
How the tools work
Free to use
Open any tool and run it with no account. Signup is only needed if you later place a call.
Runs in your browser
Lookups and checks happen on the page. List cleaners and mic tests keep your data on your device.
Useful before you dial
Country calling codes, E.164 format, rates, and timezones. The details you need before an international call.
Guides and related pages
Rates by country, dialing steps, and calling a 1-800 from abroad.
International calling rates
Per-minute rates for mobiles and landlines by country.
View calling rates →How to call internationally
Country calling codes, number format, and calling from a browser.
Read the guide →Call a US 1-800 from abroad
Why carriers block toll-free lines overseas, and what still works.
Read the walkthrough →Frequently asked questions
What can I do with these free phone tools?
You can look up international dialing codes, estimate calling rates, check phone number format, see local time for a number, check US toll-free prefixes, clean a phone list, test your mic and speakers, and generate test numbers. Everything runs in your browser.
What is an international dialing code?
It’s the country calling code you add before a local number when dialing from another country. For example, +44 for the UK or +91 for India. Use the Dialing Code Finder to look one up.
What is E.164 phone number format?
E.164 is the standard international format: a + sign, the country calling code, and the national number with no spaces or brackets. Example: +442079460018.
Are these tools free?
Yes. You can use every tool on this page for free without creating an account. If you later place a call through GlobCall, you only pay for the minutes you use. See calling rates.
Can a phone number validator tell me if a number is active?
No. The phone number validator only checks whether the number matches the country’s known numbering rules. It cannot confirm the number is in use or who owns it.
Can I call after I look something up?
Yes. If GlobCall supports the destination, you can open the dialer from your browser and place the call. The person you call does not need an app. They get a normal phone call.
Place a call from your browser
The tools above stay free. When you need to dial a mobile or landline from your browser, open GlobCall. You only pay for the minutes you use.