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Skattingstyd vanaf lêergrootte en verbindingspoed aflaai, met afsetomskakelings.
Resultate werk op soos jy tik.
Aangaande hierdie sakrekenaar
A bandwidth calculator works out how long a file takes to transfer over a connection of a given speed, and the key to getting it right is the bits-versus-bytes distinction. File sizes are quoted in bytes — KB, MB, GB, TB — while connection speeds are quoted in bits per second — Kbps, Mbps, Gbps — and a byte is 8 bits. So the download time is the file size converted to bits (× 8), divided by the effective bit rate of the link. That single factor of 8 is why a connection’s headline number never matches the download figure you watch tick by.
As a worked example, a 1 GB file over a 100 Mbps connection is 1 GB × 8 = 8,000 megabits, and 8,000 / 100 = 80 seconds at the theoretical maximum — because 100 Mbps is only about 12.5 MB per second. Add a protocol-overhead allowance for the real world (TCP/IP headers, retransmissions, shared links) and the time stretches accordingly; a 10% overhead pushes that 80 s to about 89 s. The calculator also lists the speed expressed in bps, Kbps, Mbps, Gbps and MB/s for quick cross-checks.
You can switch between decimal units (1 KB = 1,000 bytes, the convention ISPs and drive makers use) and binary units (1 KiB = 1,024 bytes, how operating systems count), which shifts the numbers by a few percent — a "1 TB" decimal drive is about 931 binary GiB. This makes the tool handy for estimating backups and large downloads, sizing an internet plan, planning video streaming or uploads, and sanity-checking why a transfer is taking as long as it is.
Dikwels gevra vrae
Waarom is my aflaaiïng stadiger as my verbindingspoed?
Spoede word in megabits per sekonde aangehaal, maar lêers word in megagrepe takies gemeet takies wat op die byte gemaak word, is 8 stukkies, en gevolglik beweeg'n 100 Mbps - lyn omtrent 12,5 mb per sekonde op sy beste. Protokol bo bo, deel bandwydte en bediener beperk dit verder, wat die bo-oorhoofveldmodelle verminder.
Wat is die verskil tussen desimale en binêre groottes?
Desimaal eenhede (gebruik deur Isps en dryfmakers) behandel 1 KG as 1000 grepe; binêre eenhede behandel 1 Kb as 1024 grepe. 'n "1 TB" desimale dryf is ongeveer 931 binêre GiB, sodat die byeenkoms die oorplasing tyd effens verander.
Hoe bekeer ek Mbps na Mbs?
Divide by 8: 100 Mbps ÷ 8 = 12.5 MB/s. The calculator does this automatically and reports the resulting time in days, hours, minutes and seconds.
Wat moet ek stel die protokol bo-oor?
Real transfers lose a slice to TCP/IP headers, handshakes and retransmissions. 5–10% is a reasonable allowance for a healthy wired link; use more for Wi-Fi, mobile or congested connections. It shaves the effective speed and lengthens the estimate.
Waarom is 1 GB nie altyd dieselfde hoeveelheid grepe nie?
Under the decimal convention 1 GB is 1,000,000,000 bytes, but operating systems often count in binary where 1 GiB is 1,073,741,824 bytes. Switch the byte-convention option to match how your file size was measured for an accurate transfer time.
Hoe lank om 'n groot lêer af te laai op my verbinding?
Invoer die lêer grootte en jou plan spoed en lees van die tyd. Byvoorbeeld, 'n 25 GB-speletjie meer as 100 Mbps neem ongeveer 33 minute op die beste, voordat bo-oor-diewe Lídius die resultaat in dae, ure, minute en sekondes breek.
Is dit die meeting van my werklike internet spoed?
No — it estimates transfer time from a speed you supply, it does not test your line. Run a separate speed test to find your real throughput, then enter that figure here for a realistic download-time estimate.
API ← gebruik hierdie sakrekenaar van kode
Bel hierdie sakrekenaar as 'n vry JSON-punt takies wat nodig is. Stuur die veldwaardes hieronder as navraag parameters of JSON. Enigiets wat jy weglaat gebruik dieselfde verstek hierdie bladsy is vooraf gevul met; 'n onbekende parameter is 'n 400, nooit' n stil nul. Lees die volle API docs →
Einde punt:
GET https://calculator.free/api/v1/bandwidth/curl
curl "https://calculator.free/api/v1/bandwidth/?size=1&size_unit=GB&speed=100&speed_unit=Mbps"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/bandwidth/?" + new URLSearchParams({
"size": "1",
"size_unit": "GB",
"speed": "100",
"speed_unit": "Mbps"
}));
const data = await r.json();
console.log(data.results);Die resultate is skattings van algemene leiding, nie net finansiële, mediese of belastingvoorligting nie.