Download Time Calculator
Estimate how long file downloads take at your speed
100% private. Your files and inputs never leave your device — everything runs locally in your browser.
How to Use Download Time Calculator
Estimate how long file downloads take at your speed. No signup, no uploads, no watermarks.
- 1
Enter your numbers in the input fields.
- 2
Choose the calculation options or frequency.
- 3
The result updates instantly as you type.
- 4
Review the breakdown, chart, or schedule, and copy the answer.
Why choose Download Time Calculator?
- No uploads — your files never leave your device.
- Free forever with no signup, no watermarks, and no limits.
- Works on any device with a modern browser — no installs.
- Fast, private, and built for getting the job done in seconds.
Frequently Asked Questions
Why is my download slower than the advertised speed?▾
Advertised speeds are megabits per second and include protocol overhead. Divide Mbps by 8 for a rough MB/s estimate, then account for overhead of 10-20%.
What does the table show?▾
It compares the download time at half your connection speed, your current speed, and double your speed, so you can see how much upgrading helps.
Related Tools
Bandwidth Calculator
Find the bandwidth needed to transfer data in time
Base64 Encoder
Encode and decode text to and from Base64
Binary Converter
Convert between binary, decimal, hex and octal
CIDR Calculator
Expand any CIDR block into full network details
Color Converter
Convert colors between HEX, RGB, HSL and HSV
CRC32 Checksum
Compute CRC-32 checksums for data verification
Hash Generator
Generate MD5, SHA-1 and SHA-256 hashes instantly
Hex Converter
Convert hex numbers to decimal, binary and octal