Code quality, test coverage, and productivity tools. Browse our free development tools below — all calculators are instant, accurate, and require no sign-up.
3D Printing Cost Calculator — Estimate 3D printing costs including filament, electricity, time, and wear. Compare materials and optimize your print settings for the best value.
3D Render Time Calculator — Estimate 3D rendering time based on scene complexity, resolution, samples, and hardware. Compare CPU vs GPU rendering and plan your render farm budget.
Antipode Calculator — Find the antipodal point (opposite side of Earth) for any coordinates. Visualize the exact location diametrically opposite to your position on the globe.
Amdahl's Law Calculator — Calculate theoretical maximum speedup from parallelization using Amdahl's Law. Visualize diminishing returns and find the optimal number of processors.
Bandwidth-Delay Product Calculator — Calculate the bandwidth-delay product (BDP) for network connections. Optimize TCP window sizes and buffer settings for maximum throughput.
Audio File Size Calculator — Calculate audio file sizes for WAV, MP3, FLAC, AAC and more. Estimate storage needs based on duration, bitrate, sample rate, and channels.
Caesar Cipher Calculator — Encrypt and decrypt text using the Caesar cipher. Shift letters by any amount, brute-force all 25 shifts, and learn classical cryptography basics.
Baud Rate Calculator — Calculate baud rates, bit rates, and serial communication timing. Convert between baud and bps for UART, RS-232, SPI, and I2C interfaces.
CBM Shipping Calculator — Calculate cubic meter (CBM) volume and shipping costs for freight. Estimate container fill, dimensional weight, and compare LCL vs FCL options.
Chmod Calculator — Convert between chmod numeric and symbolic notation. Visualize Unix file permissions for owner, group, and others with an interactive permission builder.
CV Screening & Interview Time Calculator — Estimate total time for hiring pipelines: CV screening, phone screens, technical interviews, and final rounds. Plan recruiting capacity and timelines.
Code Review Time Calculator — Estimate code review duration based on lines changed, complexity, and context switching. Optimize review processes for efficiency.
Developer Productivity Calculator — Calculate a weighted developer productivity index from commits, PRs, reviews, incidents resolved, and story points delivered.
Cyclomatic Complexity Calculator — Calculate McCabe cyclomatic complexity from edges, nodes, and connected components. Classify code complexity and risk levels.
Git LFS Cost Calculator — Calculate Git LFS storage and bandwidth costs. Compare pricing across GitHub, GitLab, and Bitbucket for large file storage.
Frames to Timecode Calculator — Convert between video frame numbers and SMPTE timecode (HH:MM:SS:FF). Supports 24, 25, 29.97 drop-frame, 30, and 60 fps standards.
Image File Size Calculator — Estimate image file sizes from resolution, bit depth, and format. Compare JPEG, PNG, WebP, AVIF, and RAW sizes with compression ratios.
Hash Identifier Calculator — Identify hash types by length and format. Generate hash checksums (MD5, SHA-1, SHA-256, SHA-512) and compare hash properties and collision resistance.
Lines of Code Calculator — Calculate LOC, SLOC, blank lines, comment lines, and comment ratio for your codebase. Analyze code composition metrics.
IP Subnet Calculator — Calculate IPv4 subnets: network/broadcast addresses, host ranges, wildcard masks, and CIDR notation. Plan subnetting for any network size.
Monorepo vs Polyrepo Build Calculator — Compare monorepo and polyrepo build times. Calculate affected package builds vs per-repo builds with dependency overhead.
Parity Bit Calculator — Calculate even and odd parity bits for binary data. Visualize error detection in serial communication, check Hamming distance, and learn binary parity.
Pixels to Print Size Calculator — Convert pixel dimensions to physical print size at any DPI. Supports inches, centimeters, and standard paper/photo sizes with quality indicators.
Pixels Per Inch (PPI) Calculator — Calculate display pixel density (PPI) from resolution and screen size. Compare devices, check Retina thresholds, and understand pixel density impact.
Pizza Tip Calculator — Calculate fair tips for pizza delivery based on order total, distance, weather, and service quality. Includes per-person splits and tipping etiquette guidelines.
PR Merge Time Calculator — Estimate pull request merge time from first review through iterations, CI checks, and approval wait. Reduce PR cycle time.
RAM Latency Calculator — Calculate RAM latency in nanoseconds from CAS latency and clock speed. Compare DDR3, DDR4, and DDR5 modules to optimize memory performance for your PC build.
Pyramid Block Calculator — Calculate the number of blocks, total weight, and construction parameters for a pyramid. Supports step pyramids and smooth-sided pyramids with custom block dimensions.
Repository Size Calculator — Estimate Git repository size from objects, LFS files, and history depth. Calculate expected clone times at different speeds.
Resolution Scale Calculator — Calculate scaled resolution, pixel count, and aspect ratio for displays, games, and video rendering. Convert between common resolutions and custom scaling percentages.
Screen Magnification Calculator — Calculate effective magnification, virtual image size, and viewing angle for screen magnifiers, loupes, and accessibility zoom settings.
RGB Color Calculator — Convert between RGB, HEX, HSL, and HSV color formats. Explore color harmony, contrast ratios, and generate complementary palettes for web design.
Screen Size Calculator — Calculate display dimensions, PPI, aspect ratio, and viewable area from diagonal size and resolution. Compare monitors, TVs, tablets, and phones.
Search Engine Ranking Calculator — Estimate organic click-through rates (CTR), traffic potential, and revenue from search engine rankings. Model SERP positions 1-100 with custom search volumes.
Solar Noon Calculator — Calculate the exact time of solar noon, sunrise, sunset, and day length for any location and date. Includes equation of time, solar declination, and twilight times.
Skull Index (Cephalic Index) Calculator — Calculate the cephalic index from head width and length measurements. Classify skull shape as dolichocephalic, mesocephalic, or brachycephalic with visual indicators.
Sprint Velocity Calculator — Calculate sprint velocity from completed story points. Forecast remaining work and estimate project completion timelines.
Story Points to Hours Calculator — Convert story points to estimated hours using your team's average velocity. Calculate confidence intervals for sprint planning.
Technical Debt Estimator — Estimate technical debt in hours and as a ratio of development effort. Prioritize remediation based on complexity and impact.
Team Capacity Calculator — Calculate available team capacity in hours after accounting for meetings, PTO, and non-coding overhead for sprint planning.
Test Coverage Calculator — Calculate line and branch code coverage percentages. Determine how many additional lines need testing to reach your target.
Test Flakiness Rate Calculator — Calculate test flakiness rate and estimate the cost of flaky tests in wasted CI time, developer productivity, and pipeline reruns.
Typing Speed Calculator — Calculate your typing speed in WPM, CPM, and accuracy. Time yourself with custom text, analyze error patterns, and track improvement over sessions.
Test Suite Runtime Calculator — Calculate total test suite runtime and estimate parallelized execution time across multiple workers with overhead factors.