Technologie Rekenmachines

Calculate aspect ratio for any width and height. Enter dimensions — get the ratio (e.g. 16:9), scale to any target size, and pixel crop suggestions. Free.

Calculate pixels per inch for any display. Enter screen resolution and diagonal size — see PPI with retina threshold comparison. Free.

Convert between bytes, KB, MB, GB, TB. Fast and accurate result with formula, step-by-step method and unit overview. Free tool.

Generate secure random passwords with custom settings. Enter length and character set — see a strong password with entropy rating. Free.

Look up your current public IP address and location. See your IPv4 and IPv6 addresses, ISP, and approximate geolocation. No sign-up.

Convert between binary decimal octal and hex. Instant conversion with formula, worked example and all representations shown.

Calculate pixels per inch for any screen. Enter width, height in pixels and screen size in inches — see PPI and display sharpness. Free.

Convert RGB colour values to hex codes and vice versa. Enter RGB or hex — get all equivalent colour representations instantly. Free.

Convert token count to approximate word count for any LLM. Enter tokens — see estimated words, characters, and reading time. Free.

Calculate AI API costs for any usage pattern. Enter input/output tokens, model pricing, and usage — see cost per request and monthly total. Free.

Calculate GPU VRAM requirements for any AI model. Enter parameter count and precision — see VRAM needed and compatible GPU options. Free.

Calculate LLM context window usage. Enter your document size — see token count, percentage of context window used, and truncation risk. Free.

Estimate monthly cloud server cost by specs and provider. Enter CPU, RAM, and storage — see cost on AWS, GCP, and Azure. Free.

Estimate your website's carbon footprint per page view. Enter page size and monthly visits — see CO₂ per visit and annual emissions. Free.

Calculate engine compression ratio or data compression ratio. Enter the relevant volumes or file sizes — see ratio with performance implications. Free.

Estimate 3D printing costs for any object. Enter material, print time, and energy use — see cost per print with material waste and machine cost. Free.

Calculate cloud computing costs across AWS, GCP, and Azure. Enter instance type and usage — see hourly, monthly, and annual costs. Free.

Calculate CDN bandwidth costs. Enter monthly traffic and provider — see delivery cost with region breakdown and caching impact. Free.

Estimate mobile app development cost. Enter features, platforms, and complexity — see cost range, timeline, and build vs buy comparison. Free.

Calculate the revenue impact of website speed improvements. Enter conversion rate, traffic, and speed change — see additional annual revenue. Free.

Build a SaaS pricing model using cost-plus and value-based approaches. Step-by-step solution with formula, example dataset and interpretation guide.

Calculate the MRR impact of churn. Enter MRR, churn rate, and expansion revenue — see net MRR change and implied growth trajectory. Free.

Check colour contrast ratio against WCAG AA/AAA standards. Enter hex codes — see ratio, pass/fail for text sizes, and accessible alternatives. Free.

Calculate server rack power consumption and cost. Enter equipment specs and rack units — see watts, kWh/month, and annual electricity cost. Free.

Estimate AI/LLM inference costs at scale. Enter tokens per request, requests per day, and model pricing — see daily and monthly cost. Free.

Calculate ROI from DevOps investment in CI/CD and automated testing. Instant result with amortization table, formula and chart. Free financial calculator.

Quantify the financial cost of technical debt as a percentage of dev time. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate the limit of any function as x approaches a value. Enter f(x) and the limit point — see algebraic and L'Hôpital's method. Free.

Calculate device pixel ratio, PPI, and ideal image resolution for any screen. Instant conversion with formula, worked example and all representations shown.

Estimate SEO ROI from keyword ranking position, search volume, and conversion rate. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate AI model fine-tuning training and inference cost. Enter dataset size and calls — see total cost on major AI platforms. Free.

Return on investment for AI agent automation. Instant result with amortization table, formula and chart. Free financial calculator.

Estimate vector database storage and query costs. See formula, step-by-step solution and all rearrangements. Instant math solver.

Estimate machine learning training costs. Enter model parameters, GPU type, and training time — see cloud compute cost with provider comparison. Free.

Compare no-code tools against custom development costs. Enter project scope — see build time, total cost, and break-even analysis. Free.

Return on investment for AI-powered content creation. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate monthly and annual SaaS and infrastructure costs. Enter your tools — see total stack cost and cost per user. Free.

Compare website hosting costs across shared, VPS, and dedicated plans. Enter traffic and requirements — see total cost of ownership. Free.

Estimate domain name value. Enter the domain — see estimated worth based on length, keywords, TLD, and comparable sales. Free.

Customer service chatbot return on investment. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate SaaS customer acquisition cost payback period. Enter CAC and monthly MRR — see months to payback and LTV:CAC ratio. Free.

Estimate training data annotation cost for ML projects. Enter dataset size and label type — see cost per label and total annotation budget. Free.

Compare renting GPU compute vs buying hardware. Enter training hours and usage frequency — see break-even and optimal choice. Free.

Inference infrastructure costs for deployed AI models. Step-by-step solution with formula, example dataset and interpretation guide.

Calculate ROI from AI automation. Enter hours automated, hourly cost, and AI tool cost — see annual savings and payback period. Free.

Compare open source tools against paid SaaS solutions. Enter implementation and ops costs — see 5-year TCO for each option. Free.

Estimate cost to embed documents for RAG and vector search. Enter document count and model — see total embedding cost on major APIs. Free.

Return on investment for migrating to the cloud. Instant result with amortization table, formula and chart. Free financial calculator.

Estimate the cost of a data breach. Enter records compromised and company size — see total cost using IBM/Ponemon industry benchmarks. Free.

ROI from quality assurance investment. Instant result with amortization table, formula and chart. Free financial calculator.

Estimate container orchestration infrastructure cost. Enter nodes and resources — see monthly Kubernetes cost on cloud providers. Free.

Return on investment from continuous integration. Instant result with amortization table, formula and chart. Free financial calculator.

Calculate total cost of software outages and downtime. Enter hourly revenue and downtime — see direct and indirect incident cost. Free.

Robotic process automation return on investment. Instant result with amortization table, formula and chart. Free financial calculator.

Business value from predictive analytics. Instant result with amortization table, formula and chart. Free financial calculator.

Estimate true cost of engineering hiring interviews. Enter engineer time and salary — see cost per interview loop and per hire. Free.

Calculate cloud data egress costs. Enter data transfer volume and provider — see egress cost with inter-region and internet transfer rates. Free.

Sprint velocity and backlog completion timeline. Formula, variable legend, worked example and step-by-step mechanics solution. Instant result.

Calculate cyclic redundancy check for data integrity. Enter your data string — see CRC-8, CRC-16, and CRC-32 checksums. Free.

Calculate network latency and expected ping time. Enter distance and medium — see propagation delay and round-trip time. Free.

Estimate CPU performance from specifications. Enter cores, clock speed, and generation — see estimated benchmark score. Free.

Calculate battery charging time from capacity and charge rate. Enter mAh and charger watts — see charge time from 0% and 20% to full. Free.

Calculate usable storage in RAID configurations. Enter drive count, size, and RAID level — see usable capacity and fault tolerance. Free.

Calculate network bandwidth and data transfer time. Enter file size and connection speed — see transfer time and effective throughput. Free.