International call cost calculator
Choose a country, choose landline or mobile, drag the duration. The calculator prices the call at Telvio's published rate and, beside it, at what a provider billing in whole minutes would charge for exactly the same conversation.
- No signup
- Live published rates
- Per-second and per-minute compared
The number nobody else shows you
Every calling service publishes a per-minute headline. What almost none of them publish is the billing unit, and the billing unit is where the difference between the headline and the invoice comes from.
A provider that bills per minute charges a whole minute for every minute started. A call of four minutes and ten seconds is billed as five. A call of forty-seven seconds is billed as a full minute — twenty-eight per cent more than the time you spent talking. Do that across a month of short calls and the effective rate is meaningfully higher than the one on the pricing page.
The second figure in the result panel is that arithmetic, made explicit. It is deliberately priced at our rate rather than at a competitor's, because the claim being made is about the billing unit and not about anybody else's tariff — we have verified per-country rates for our own service and not for theirs, and pricing a comparison with a number we cannot vouch for would be worse than not making the comparison.
Telvio bills per second with no connection fee, so the first figure is what you pay. A forty-seven second call is charged as forty-seven seconds.
What the rates in this calculator are
- They are Telvio's own published rates, read from the same file that prices the app. The calculator and the app cannot disagree, because there is only one source.
- They are per minute, in US dollars, and they are the retail rate — there is no separate connection fee, monthly minimum or maintenance charge to add.
- Landline and mobile are priced separately, because in most countries they cost different amounts to terminate. In a majority the mobile is dearer; in a minority, including the United Kingdom, Germany and Kenya, it is the other way around.
- They cover the countries we actually serve. Four sanctioned jurisdictions are absent, and a country with no published rate is a country we do not currently route calls to.
- They can change. Wholesale termination rates move, and when they do, ours follow. The figure here is what the rate is now, not a promise about next quarter.
Reading a call bill: the four charges to look for
| The per-minute rate | The headline. Meaningful only alongside the billing unit — a rate of $0.02 billed per minute can cost more per conversation than $0.025 billed per second, if your calls are short. |
|---|---|
| The billing increment | Per second, per six seconds, or per minute. Per-minute rounding costs the most on short calls, which is exactly the kind of call most people make most often. A provider that does not state its increment is billing per minute. |
| The connection fee | A flat charge added to each call regardless of length, historically common on calling cards and still present on some services at around five cents per call. On a one-minute call a five-cent connection fee can double the cost. Telvio has none. |
| Credit expiry and maintenance | The charge that removes money you already paid. Several major services expire unused credit after 180 days; others deduct a monthly maintenance fee from a dormant balance. Telvio credit does not expire and carries no maintenance charge. |
Why calls to some countries cost fifty times more than others
The price of an international call is not principally a decision made by the company you buy it from. It is the wholesale termination rate: what the operator at the far end charges to accept the call onto their network and deliver it to the recipient. Your provider pays that, adds its margin, and quotes you the total.
Termination rates are set by a mixture of regulation and commercial negotiation, and they vary enormously. In markets where the regulator has driven mobile termination rates towards cost — most of North America, Mexico, India — the wholesale price is a fraction of a cent and the retail price can be two or three cents. In markets where termination is still a significant source of revenue for the incumbent, or where a small number of operators face little competition, it can be a hundred times higher.
This is why the pattern of expensive destinations looks strange to anybody expecting it to track wealth or distance. Calling a mobile in Germany costs many times what calling a mobile in India costs, despite Germany being closer to most callers and considerably richer. Distance is essentially irrelevant to the cost of routing a call; the terminating operator's tariff is essentially all of it.
It also explains why a cheap headline for one country tells you nothing about another, and why comparing services on a single advertised rate is misleading. A service that is cheapest to India may be among the most expensive to Nigeria. Compare on the corridor you actually call.
Making the arithmetic work in practice
Three things move the real cost of your calling more than switching provider does.
The first is the line type. Where a country prices mobile termination well above fixed, and the person you are calling has a landline as well, using it is often a larger saving than any tariff difference. The calculator shows both so the comparison is one click.
The second is call length. If your calls are typically short — a check-in, a confirmation, a message — the billing increment dominates and per-second billing is worth more than a lower headline rate. If your calls are typically long, the headline rate dominates and the increment barely matters. Knowing which you are is worth more than any comparison table.
The third is the alternative you are actually replacing. Roaming, at typical carrier rates of one to three dollars a minute, is between fifty and a hundred times more expensive than a VoIP call to the same destination, and that gap dwarfs every difference between VoIP providers. If you are still calling on roaming, which provider you switch to matters far less than switching at all.
How Telvio's credit packs work
There are three packs: $1.99, $4.99 and $9.99. Each buys that amount of credit, and credit is consumed at the per-country rate the calculator shows.
That is worth stating precisely because several competitors sell minute bundles that look similar and are not. A bigger Telvio pack is more credit, not a cheaper per-minute rate — there is no volume discount and no tier where the rate improves. We would rather say so than manufacture a saving that is not there.
Credit does not expire. There is no monthly fee, no minimum spend and no charge for a dormant balance, so a pack bought for one call keeps its value until you make the next one.
Every new install comes with one free minute, which is enough to hear the call quality on your own corridor before spending anything. Payment goes through the App Store, so card details never reach us.
Bottom line
The cost of an international call is the per-minute rate multiplied by the duration, adjusted by the billing increment and any connection fee. On short calls the increment matters more than the rate: a per-minute biller charges a full minute for a forty-seven second call, which is twenty-eight per cent more than the time you used.
Rates vary between countries by a factor of fifty or more because they are driven by the terminating operator's wholesale tariff, not by distance. Compare providers on the specific corridor you call rather than on an advertised headline for a country you never dial.
Frequently asked questions
How do I calculate the cost of an international call?
Multiply the per-minute rate for the destination country by the length of the call, then account for the billing increment. A provider billing per minute rounds every started minute up to a whole one, so a four-minute-ten-second call is charged as five minutes. Add any per-call connection fee on top.
What is the difference between per-second and per-minute billing?
Per-second billing charges for the exact time you talk. Per-minute billing rounds every call up to the next whole minute, so a 47-second call costs a full minute — 28 per cent more than the time used. The difference is largest on short calls and negligible on long ones.
Why is calling a mobile more expensive than a landline?
Because mobile operators typically charge a higher wholesale termination rate to accept an incoming call than fixed-line operators do. In a minority of countries — the United Kingdom, Germany and Kenya among them — regulation has pushed mobile termination below fixed, and the relationship reverses.
Why do calls to some countries cost so much more than others?
The dominant factor is the terminating operator's wholesale rate, which is set by local regulation and competition rather than by distance. Countries whose regulators have driven termination rates towards cost are cheap to call; markets where termination remains a protected revenue stream can be a hundred times more expensive.
Do bigger credit packs give a cheaper per-minute rate?
Not with Telvio. A larger pack is more credit at the same per-country rate — there is no volume tier and no discount for buying more. Some services do offer bundled minutes that work differently, and it is worth checking whether a bundle is credit or minutes before comparing headline prices.
How much cheaper is VoIP than roaming?
Typically fifty to a hundred times. Carrier roaming for voice commonly runs between one and three dollars a minute, while a VoIP call to the same destination is usually a few cents. That gap is far larger than any difference between VoIP providers, which is why switching away from roaming matters more than which service you switch to.
Other free tools
Now make the call
Telvio dials real phone numbers in 200+ countries over WiFi or data. Per-second billing, first minute free.
Download Telvio