Barometric Pressure Converter
Convert barometric pressure between atmospheres, bar, PSI, kPa, mmHg, inHg, hectopascals, and millibars. Includes reference pressure table and preset values.
Free Volume Calculators
45 toolsLiters to gallons, cups to milliliters, and fluid volume converters. Browse our free volume tools below — no sign-up required.
CC to Grams Converter
Convert cubic centimeters (cc/mL) to grams and back for water, flour, sugar, oil, honey, and 5 more substances. Includes density chart and reference table.
CC to Liter Converter
Convert cubic centimeters (cc) to liters and back. Also shows mL, dL, gallons, fluid ounces, cups, pints, quarts, and cubic meters. Reference table included.
CC to mL Converter
Confirm that cc and mL are identical and convert to 10 other volume units including liters, fluid ounces, cups, pints, quarts, and gallons. Reference table included.
CC to Oz Converter
Convert cubic centimeters (cc) to fluid ounces and back. Supports US and imperial fl oz with instant cross-unit results for 10 volume units.
CCF to Gallons Conversion
Convert CCF (centum cubic feet) to gallons and vice versa. Includes utility cost estimation, household usage table, and multi-unit results.
Cups to Gallons Converter
Convert cups to gallons and gallons to cups. Supports US, metric, and imperial cups with fraction display, fill bar, and recipe volume table.
Cups to Oz Converter
Convert cups to fluid ounces (and back) for US, metric, and imperial cups. Shows tablespoons, teaspoons, pints, and more with a quick-reference table.
Cups to Pints Converter
Convert cups to pints and pints to cups for US and imperial systems. Includes quarts, gallons, fluid ounces, and a kitchen volume reference table.
Cups to Quarts Converter
Convert cups to quarts and quarts to cups for US and imperial systems. Shows pints, gallons, fluid ounces, liters, and a US volume ladder chart.
Fluid Ounces to Cups Converter
Convert fluid ounces (fl oz) to cups and back. US and imperial systems, fraction display, cup visualization, and fraction-to-ounce reference table.
Fluid Ounces to Pounds Conversion
Convert fluid ounces to pounds and pounds to fluid ounces using liquid density. Preset densities for water, milk, honey, oil, and more.
Gallon Converter
Convert between US liquid, imperial, and dry gallons. Shows liters, quarts, pints, cups, fluid ounces, and cubic feet with a gallon-type comparison chart.
Gallon to Tons Converter
Convert gallons to tons (short, long, metric) and back. Density-aware with presets for water, diesel, gasoline, crude oil, and more.
Gallons to Cups Converter
Convert gallons to cups and cups to gallons for US and imperial systems. Visual cup-count grid, recipe reference table, and multi-unit output.
Gallons to Grams Converter
Convert gallons to grams and grams to gallons using liquid density. Presets for water, milk, oil, honey, and gasoline with a grams-per-gallon table.
Gallons to Pints Converter
Convert gallons to pints and pints to gallons for US and imperial systems. Includes quarts, cups, fluid ounces, liters, and container reference table.
Gallons to Pounds Converter
Convert gallons to pounds and pounds to gallons. Density presets for water, milk, honey, oil, gasoline, and diesel with a weight-per-gallon reference table.
Gallons to Quarts Converter
Convert gallons to quarts and quarts to gallons for US and imperial systems. Shows pints, cups, fluid ounces, liters with a volume hierarchy chart.
Grams to Liters Converter
Convert grams to liters and liters to grams using liquid density. Presets for water, milk, oil, honey, and ethanol with density comparison chart.
Imperial to Metric Volume Converter
Convert imperial volume units to metric — fluid ounces, cups, pints, quarts, and gallons to milliliters, centiliters, and liters with comparison chart.
Imperial Volume Converter
Convert between all imperial volume units — fluid ounces, cups, pints, quarts, and gallons — for US and British systems with scale chart and comparison table.
Kilograms to Gallons Converter
Convert kilograms to US gallons and gallons to kilograms using liquid density. Presets for water, milk, oil, gasoline, and diesel with kg-per-gallon reference.
Kilograms to Liters Converter
Convert kilograms to liters and liters to kilograms using liquid density. 8 liquid presets, volume comparison chart, and liters-per-kg reference table.
Kilograms to Ounces Converter
Convert kilograms to ounces and ounces to kilograms. Shows pounds, grams, milligrams, stones, and tonnes with weight comparison chart and lookup table.
Liters to cc (Cubic Centimeters) Converter
Convert liters to cubic centimeters (cc/mL) and cc to liters. Includes metric sub-units, cubic inches, US volumes, and engine displacement reference table.
Liters to Centiliters Converter
Convert liters to centiliters (cL) and centiliters to liters. Includes mL, dL, fl oz, cups, pints, and tablespoons with European drink size reference.
Liters to Pounds Converter
Convert liters to pounds and pounds to liters using liquid density. Presets for water, milk, oil, honey, gasoline, and diesel with lbs-per-liter table.
Metric to Imperial Volume Converter
Convert metric volumes (mL, cL, dL, L) to US and imperial units — fluid ounces, cups, pints, quarts, and gallons with container comparison chart.
Metric to SAE Socket & Wrench Converter
Find the closest SAE (fractional inch) socket or wrench size for any metric bolt. Fit quality indicator, cross-reference table, and size-difference analysis.
Metric to Standard Volume Converter
Convert metric volumes (mL, cL, dL, L) to US standard units — teaspoons, tablespoons, fluid ounces, cups, pints, quarts, and gallons with cheat sheet.
Metric Volume Converter
Convert between all metric volume units — mL, cL, dL, L, daL, hL, kL, cc, and cubic meters. Prefix scale table, bar chart, and everyday examples.
Milligrams to Tablespoons Converter
Convert milligrams (mg) to tablespoons with density selection for 8 common liquids. Tablespoon tally, density comparison table, and reference chart.
Milligrams to Teaspoons Converter
Convert milligrams (mg) to teaspoons with density selection for 8 common liquids. Fill-level gauge, drop count, density comparison table, and reference chart.
Milliliters to Cups Converter
Convert milliliters (mL) to cups and back. Supports US, metric, imperial, and Japanese cups with fraction display, fill chart, and standard comparison.
Ounces to Kilograms Converter
Convert ounces (oz) to kilograms (kg) and back. Includes grams, pounds, mixed lbs+oz, stones, weight scale chart, and everyday item comparison.
Ounces to Pounds Converter
Convert ounces (oz) to pounds (lbs) and back. Mixed lbs+oz format, fraction display, grams, kilograms, pound progress bars, and everyday weight comparison.
Pints to Cups Converter
Convert pints to cups and back. US and imperial systems, cup tally visualization, volume hierarchy bars, and reference table with fl oz, mL, and quarts.
Pints to Gallons Converter
Convert pints to gallons and back. US and imperial systems, gallon-jug fill visualization, volume hierarchy table, and extended reference chart.
Pints to Pounds Converter
Convert pints to pounds with density selection for 8 common liquids. Tests the "pint's a pound" rule, mixed lbs+oz, density comparison table, and reference chart.
Pounds & Ounces Calculator
Convert between pounds, ounces, and mixed lbs+oz. Three input modes, baby weight presets, pound breakdown bars, everyday items table, and reference chart.
Pounds to Ounces Converter
Convert pounds (lbs) to ounces (oz) and back. Mixed lbs+oz format, grams, kg, stones, ounce scale bars, standard package sizes, and reference table.
Quarts to Cups Converter
Convert quarts to cups and back. US and imperial, nearest fraction display, cup tally visual, volume ladder, and extended reference table.
Quarts to Gallons Converter
Convert quarts to gallons and back. US and imperial systems, gallon-fill jug visualization, volume hierarchy table, common products, and reference chart.
Quarts to Pounds Converter
Convert quarts to pounds with 7 liquid density presets. Density comparison bars, reference table, mixed lbs+oz, metric equivalents, and water-based lookup chart.