Calcium formate is widely used as an additive in the construction industry, particularly in cement and concrete production. It acts as an accelerator, improving the early strength development of concrete, especially in cold weather conditions. This allows for faster setting times and reduced curing periods, making it valuable in pre-cast concrete manufacturing and winter concreting.

In animal feed, calcium formate serves as a preservative and antibacterial agent. It helps control microbial growth, extending shelf life and improving feed hygiene. It is also involved in energy metabolism in livestock, contributing to better feed efficiency and growth performance in animals such as pigs and poultry.

Another key application is in the leather tanning industry, where it assists in the basification of chrome tanning baths, improving the penetration and fixation of tanning agents. It also helps maintain pH stability during processing.

Additionally, calcium formate is used in some de-icing formulations as a less corrosive alternative to traditional salts. It is effective in melting ice and snow on roads and pavements while being less damaging to concrete and metal structures.

Its role as a source of formate ions also makes it useful in certain chemical synthesis and environmental applications, including flue gas treatment to reduce sulfur and nitrogen oxide emissions.