Calculator Tools

Convert seconds to minutes, hours, days, weeks, months, years and more time units with precision.

Calculate work hours, breaks, overtime, and wages with an intuitive weekly timesheet. Perfect for payroll and time tracking.

Convert annual, monthly, or weekly salary to hourly rate with customizable working hours and detailed calculation breakdown.

Calculate SLA percentages, uptime, and downtime periods. Convert between SLA percentages and actual downtime with industry standard examples.

Convert between different byte units (bits, bytes, KB, MB, GB, TB, PB) with interactive slider and comparison table.

Track and analyze sleep debt with customizable goals, interactive charts, recovery planning, and scientific insights into sleep health.

Calculate caffeine levels in your system over time with interactive charts, consumption tracking, and personalized recommendations for better sleep.

Add or subtract years, months, weeks, days, hours, minutes, and seconds to datetime inputs. Supports batch processing and file uploads.

Calculate age differences between multiple people. Input names and birthdates to see age gaps between all persons in an easy-to-read card format.

Compare weight and height measurements between multiple people. Input names, weights, and heights to see detailed comparisons and BMI calculations.

Estimate race finish times and calculate required pace for any distance. Plan your training with precise pace calculations and export results to CSV.

Calculate running pace times for different distances with minute/second per km/mile input. Generate pace tables with highlighted special distances like 5K, 10K, half marathon.

Calculate time differences between consecutive timestamps in CSV data. Process CSV text or files and select timestamp columns for delta analysis.

Calculate investment returns for lumpsum investments with CAGR, future value, and compound interest calculations. Browser-based history tracking for all calculations.

Calculate and compare unit prices (cost per ounce, pound, kilogram, liter) to find the best value when shopping. Track calculation history.

Calculate discounts with tax considerations. Support for percentage off, fixed amounts, bulk deals (2 for 1, 3 for 2), and complex discount scenarios.

Calculate electricity costs for multiple appliances. Add appliances with power ratings, quantities, and runtime to estimate daily consumption and costs.

Calculate the true cost of meetings based on attendee salaries, meeting duration, setup time, and supplementary costs. Support for one-time and recurring meetings.

Calculate Cost Per Click (CPC) and Cost Per Mille (CPM) for advertising campaigns. Convert between CPC and CPM using CTR with detailed calculation history and examples.

Calculate customer retention rate and attrition rate with detailed breakdown. Track existing customers, new acquisitions, and analyze customer loyalty metrics.

Calculate customer churn rate based on starting customers and customers lost during a period. Track customer retention with detailed breakdown and analysis.

Calculate gross and net rental yield for property investments. Track rental income, expenses, vacancy rates, and compare property ROI with detailed analysis and log history.

Calculate probability of coin flip outcomes with step-by-step examples. Track results with browser-based calculation history and detailed explanations.

Calculate fair tip distribution based on hours worked. Divide total tips proportionally among employees based on their work hours with detailed breakdown.

Estimate how long it takes for an investment to double using the Rule of 72 formula. Calculate time to double based on interest rate with both approximation and exact calculations.

Calculate credit card debt-to-limit ratio (credit utilization) with support for multiple cards. Helps optimize your FICO score by tracking credit utilization.

Calculate asset depreciation using the straight-line method. Includes depreciation schedule, annual breakdown, and visual chart for accounting and tax purposes.

Estimate crowd size using the Jacobs Method. Calculate number of people in an area based on space dimensions and crowd density levels.

Calculate expected waiting time in queues using queueing theory (M/M/1 model). Estimate wait times based on arrival rate, service rate, and number of servers.

Calculate call center staffing requirements using Erlang C formula. Determine agents needed based on call volume, handle time, and service level targets.

Assess fatigue risk for shift workers based on sleep duration, hours awake, shift type, and circadian factors. Get personalized safety recommendations.

Calculate memory retention using the Ebbinghaus forgetting curve. Plan spaced repetition schedules for optimal learning and long-term knowledge retention.

Project future affiliate marketing earnings with traffic growth, conversion rates, and commission calculations. Visualize income projections over time.

Calculate the monetary value of your email list based on subscriber count, open rate, click rate, conversion rate, and commission. Essential for email marketers.

Calculate the return on investment for your blog posts and videos. Track content costs, revenue, and performance metrics to optimize your content strategy.

Identify where leads drop off in your marketing funnel. Calculate conversion losses at each stage from impressions to checkout and optimize your funnel performance.

Calculate the real value loss from fake followers on influencer accounts. Estimate wasted spend and true engagement metrics for brand and agency partnerships.

Calculate your TikTok affiliate content virality score. Analyze views, share rate, and conversion rate to get momentum indicators and optimal post timing suggestions.

Fun viral calculator to see if your affiliate income can cover your monthly expenses. Get a reality check with emoji reactions and shareable results.

Estimate your Reddit karma growth based on posts per week, average upvotes, and comment engagement. Calculate time to reach karma milestones like 1K or 5K.

Calculate potential ROI from subreddit promotions. Enter subscribers, online users, CTR, conversion rate, and AOV to estimate revenue and ROI for Reddit marketing.

Calculate depth of field for photography. Enter focal length, aperture, subject distance, and sensor size to determine the zone of sharpness in your images.

Master the exposure triangle by calculating EV from ISO, aperture, and shutter speed. Understand how these three elements work together for perfect exposure.

Calculate effective focal length based on sensor crop factor. Convert lens focal lengths between full-frame and crop sensor cameras (APS-C, Micro 4/3, etc.).

Calculate the hyperfocal distance for maximum depth of field in landscape photography. Enter focal length, aperture, and circle of confusion to find the optimal focus point.

Calculate the required ISO for low-light photography conditions. Enter aperture, shutter speed, and light level (EV) to determine optimal ISO settings.

Estimate bokeh blur intensity based on focal length, aperture, and subject distance. Visualize background blur potential for portrait and artistic photography.

Calculate the minimum shutter speed for sharp handheld photos. Based on focal length and crop factor to avoid camera shake blur.

Calculate storage requirements for photography. Enter megapixels, file format (RAW/JPEG), and number of shots to estimate memory card and storage needs.