Data Tools

Paste CSV content to transform tabular rows into a JSON array. Useful when moving data between spreadsheets, APIs, scripts, databases or applications that expect structured JSON.

Paste an array of JSON objects to generate CSV output that can be opened or reused in spreadsheet and data-processing tools. Best suited to objects with a consistent set of fields.

Paste one item per line and keep only unique entries. Useful for cleaning e-mail lists, keywords, identifiers, URLs, product references and exported datasets.

Compare list A with list B and return only the values present in both. Useful for matching identifiers, contacts, keywords, inventories or datasets from different sources.

Compare two line-based lists and identify values that occur in one list but not the other. Useful for spotting missing records, changed inventories, contact differences and dataset discrepancies.

Paste one item per line and reorder the list alphabetically. Useful for names, keywords, locations, products, categories and other text-based collections.

Enter numbers separated by spaces, commas or lines to calculate their count, sum, average, minimum and maximum. Useful for quick checks without opening a spreadsheet.

Enter a percentage and a number to calculate the corresponding amount. Useful for discounts, taxes, commissions, margins, statistics, budgets and everyday percentage calculations.

Enter your birth date and optionally your birth time and a target age. Calculate your precise age, days, hours and minutes lived, next birthday, zodiac sign, decan, lustres and approximate lunar cycles. A lustre is a period of five years. Calculations run locally in your browser.

Enter your height and weight to calculate BMI (body mass index), its standard adult category and the weight range corresponding to a BMI from 18.5 to 24.9. BMI is a screening indicator, not a medical diagnosis.

Enter two dates to calculate their calendar difference in years, months and days, plus total days, weeks, hours and minutes. The calculation runs locally in your browser.

Enter the original price and discount percentage to calculate the final price, your total savings and the percentage of the original price that remains to be paid. Everything is calculated locally in your browser.

Enter an amount and a VAT rate. NuvaTools shows what the amount becomes when VAT is added and what the pre-tax amount is when VAT is already included. The VAT rate is freely adjustable for use in different countries.

Enter the cost price and selling price to calculate profit amount, profit margin and markup percentage. The calculation runs locally in your browser.

Enter the loan amount, annual interest rate and duration to calculate the estimated monthly payment, total interest and total amount repaid.

Enter initial capital, annual interest rate, duration and compounding frequency to estimate future value and total interest generated.