Download Time Calculator
Estimate how long a file download will take from its size and connection speed.
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Category
Online utilities
Network, development and productivity tools that run in your browser with no sign-up.
Networks
Mbps ↔ MB/s Converter
Convert network and transfer speeds between bits and bytes per second.
Open tool →IPv4 / Subnet Calculator
Calculate network, broadcast, host range and mask from an IPv4 address and CIDR prefix.
Open tool →Development
JSON Formatter & Validator
Format, minify and validate JSON without sending the content to a server.
Open tool →Base64 Encoder & Decoder
Encode UTF-8 text to Base64 and decode it back without uploading it.
Open tool →Hash Generator
Calculate SHA-256, SHA-384 and SHA-512 for text, or SHA-256 for a file with Web Crypto.
Open tool →Unix Timestamp Converter
Convert Unix seconds to UTC dates and turn a date into a timestamp.
Open tool →Generators
Password Generator
Generate random passwords using your browser’s cryptographic API.
Open tool →UUID v4 Generator
Generate cryptographically random UUID v4 identifiers in your browser.
Open tool →Productivity
Typing Speed Test
Type the displayed text and measure speed, accuracy, time and key rhythm.
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